package com.atguigu.gulimall.order.service.impl;

import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.gulimall.order.dao.OrderItemDao;
import com.atguigu.gulimall.order.entity.OrderEntity;
import com.atguigu.gulimall.order.entity.OrderItemEntity;
import com.atguigu.gulimall.order.entity.OrderReturnReasonEntity;
import com.atguigu.gulimall.order.service.OrderItemService;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.rabbitmq.client.Channel;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.util.Map;

@Slf4j
@RabbitListener(queues = {"hello-java-queue"})
@Service("orderItemService")
public class OrderItemServiceImpl extends ServiceImpl<OrderItemDao, OrderItemEntity> implements OrderItemService {

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<OrderItemEntity> page = this.page(
                new Query<OrderItemEntity>().getPage(params),
                new QueryWrapper<OrderItemEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * 声明需要监听的所有队列
     *  参数可以写以下类型
     *    1、Message message ：原生消息类型 头+体
     *    2、T<发送的消息类型>  例如 OrderReturnReasonEntity
     *    3、Channel channel  当前传输数据的通道 package com.rabbitmq.client
     *
     *    Queue:可以有很多人来监听  只要收到消息，队列就会删除消息，而且只能有一个人收到消息
     *      场景：
     *         1）、订单服务启动多个   同一个消息只能有一个客户端收到
     *         2）、只有一个消息完全处理完，方法结束运行，我们就可以接受到下一个消息
     *
     */
    @RabbitHandler
    //@RabbitListener(queues = {"hello-java-queue"})
    public void receiveMessage(Message message, OrderReturnReasonEntity content, Channel channel){
        System.out.println("接收到消息==>"+content);
        //try {
        //    TimeUnit.SECONDS.sleep(3);
        //} catch (InterruptedException e) {
        //    e.printStackTrace();
        //}
        System.out.println("消息处理完成==》"+content.getName());
        //channel内容按照顺序自增
        long deliveryTag = message.getMessageProperties().getDeliveryTag();
        System.out.println("deliveryTag==>"+deliveryTag);
        //签收货物，非批量模式  multiple
        try {
            if (deliveryTag%2==0) {
                //收货
                channel.basicAck(deliveryTag,false);
                System.out.println("签收了货物"+deliveryTag);
            } else {
                //退货  requeue=false丢弃  requeue=true 发回服务器，服务器重新入队
                    // basicNack(long deliveryTag, boolean multiple, boolean requeue)
                channel.basicNack(deliveryTag,false,true);
                    //basicReject(long deliveryTag, boolean requeue)
                //channel.basicReject();
                System.out.println("没有签收货物"+deliveryTag);
            }
        } catch (IOException e) {
        //  网路中断
        }
    }

    @RabbitHandler
    //@RabbitListener(queues = {"hello-java-queue"})
    public void receiveMessage2(Message message, OrderEntity content, Channel channel){
        System.out.println("接收到消息==>"+content);
        System.out.println("消息处理完成==》"+content);
    }

}